Walliams had bugs laying eggs in his guts during Thames swim

Nice, while swimming the length of the Thames, David Walliams contracted the diarrheal infection Giardiasis, from the exposure to sewage contaminated water. And tore a disc in his back. Giardiasis or ‘beaver fever’ is an infection of the small intestine by a single-celled organism called Giardia lamblia, that breeds by laying eggs in your intestines and multiplying daily, causing abdominal cramps, watery diarrhea, foul flatus and fever for 3-4 days, before proceeding into a more sub-acute phase. So bad that for people with compromised immune systems, such as elderly or AIDS patients, it can be deadly. Read The Sun